did you have specific requirements? did the srock logo meet said requirements?
i have received logos that contain a stock image of a lemur, and is consequently nothing like the requirements that i sent. usually though, when i point this out in a revision, and make notes on the delivered file, they will make me something original. it might not be as good quality, but if you pay $5, you will get $5 worth of logo
teh seller who made my icon only sells their own original work, and offers really good value for money IMHO. i think i pays $30 and i would up getting source files and all he trimmings for two versions of the logo
my advice would be to check out the DELIVERED images on the sellers profile, and also pay attention to what the different packages include
hope this helps
additionally, with logos it’s usually quite easy to edit them yourself due to their simplistic nature, especially when you have transparencies and source files and wotnot